Sun clothes, gloves, helmet with soft brim screwed to it, water glasses with Bekos nose guard superglued in place. A bit of sun goo to lips. Set. ( variations on this for several years in Florida surviving high speed crashes and up to head high surf...)

I made a lycra sun mask. If the holes are too big then my lips are exposed which is the part of my body that gets the most sun damage. If the holes are small enough to provide protection then I can't breathe through it when it's wet.

I thought about making up all sorts of prototypes using mesh or micro holes in lycra. In the end it's cheaper and easier to buy a Naroo X5S mask from ebay.

PS I tried a Buff while foiling. For the first hour it was fine ... then I fell in the water.

Naroo mask is the best I found so far , it hurts my ears a little but I get used to it .
The best compromise is the Gath Helmet with full adjustable visor 98 percent UV protection .I don't even notice I have a helmet on , this is so light and small , It takes a while to get used to the lens since the lens is not close enough from the eyes and the focus is not perfect . I put Aloe Gator along with it , I can adjust the height of the lens depending of the hours of the day . So in the early morning or at sunset I pull the lens all the way down , otherwise I raise it half and sunscreen does the job for the bottom of the face .

I see a bunch of people here in northeast Brazil kitesurfing all day long without any kind of protection but the sunscreen. Maybe they don't care because they are tourists that will be here for just a few days or weeks,... But me.. I live here, and my father had skin cancer, so I always tried to be very well protected while in the water.

The problem with hats is that they will come off or the wind will make the brim flop onto your face.

Best hat I found was the Fcs bucket hat ( https://www.amazon.com/FCS-Wet-Bucket-S ... B008EX44DY ) I used it for a long time, paired with a long sleeve UV shirt and uv jogging pants..plus some. kind of sunscreen that doesn't come off (like those surfers used decades ago).

The fcs hat however started folding in very strong winds or getting in the way when I wanted to look up to the kite. And if I moved it up I would get too much sun on my face, specially on the lips.. So I started using a baseball hat under the fcs hat.. extremely ugly, but it worked.

I also bought one of those hats that come with a neck protection and I sometimes use it instead of the solution above. Something that looks like this:

I'm back, haven't had a chance to use that head piece as much as I was planning to - simply put, winds were usually picking up after 2-3pm and by then I don't even bother with sunscreen. Still had a few short sessions and some wondering-about beach time. This thing proved to be pretty handy. Hides the face really nicely, not hot. Agressive riding should be avoided since it gets a bit hard to breath through the mesh when wet.

As far as I'm concerned - it's a great accessory for these times when we've got nothing better to do, but to go ride during these worst (10am-3pm) hours. Unless I'll be planning a hardcore wipe-outs session - I'll chose this over any sunscreen.

PS I'm trying to get my local shop interested - so we might just get an importer for North America.